Money management software?

Given that we are all software geeks here (to varying degrees), I want to explore what software you guys use to manage your money.

I am specifically keen on looking at the ethos of the software you mention and the reasons why you chose that software. To make an analogy, I am thinking of the ethos of The Archive, which supports transparency, ownership of material, and future-proofing (aspects that do not necessarily seem so useful in a money app, i.e. transparency).

What would/do you guys find important in a money management tool? Which one do you use? If you do not use software, how do you organize your finances (pen and paper, terminal, etc...)?